Do I have to report the SC wages shown on my W2 if I live and work in NC?

File all your earnings with your resident state return, North Carolina (NC).  If you do not live in South Carolina (SC) or work in SC there is no reason for you to file unless you are getting a refund of tax withheld in SC, in error by the employer.

File only the actual wages earned, $50,000 to your resident state.

Which state do I file first?

You should prepare your nonresident state first.  Your resident state provides a credit for the tax you pay to your nonresident state.  TurboTax will automatically transfer this credit to your resident state return when you prepare your nonresident state first.